import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import List from '../components/goods/List.vue'
import Add from '../components/goods/Add.vue'
import Order from '../components/order/Order.vue'
import Report from '../components/report/Report.vue'
import VuexClass from '../components/study/VuexClass.vue'
import Todo from '../components/study/Todo.vue'

Vue.use(VueRouter)

const routes = [
  {
    path: '/',
    redirect: '/login'
  },
  {
    path: '/login',
    component: Login
  },
  {
    path: '/home',
    component: Home,
    redirect:'/welcome',
    children:[
      {
        path:'/welcome',
        component:Welcome
      },
      {
        path:'/users',
        component:Users
      },
      {
        path:'/rights',
        component:Rights
      },
      {
        path:'/roles',
        component:Roles
      },
      {
        path:'/categories',
        component:Cate
      },
      {
        path:'/params',
        component:Params
      },
      {
        path:'/goods',
        component:List
      },
      {
        path:'/goods/add',
        component:Add
      },
      {
        path:'/orders',
        component:Order
      },
      {
        path:'/reports',
        component:Report
      },
      {
        path:'/vuex',
        component:VuexClass
      },
      {
        path:'/todo',
        component:Todo
      }
    ]
  }
  
]

const router = new VueRouter({
  routes
})
// 路由导航守卫
router.beforeEach((to,from,next)=>{
  // to将要访问的路径
  // from从哪个路径跳转过来
  // next是一个函数，表示放行
  // next()放行 
  // next('/login')强制跳转，类似于redirect重定向
  if(to.path == '/login'){
    return next();
  }
  const token = window.sessionStorage.getItem('token');
  if(token){
    // 放行
    next();
  }else{
    // 强制跳转
    next('/path')
  }
})
export default router
